Collapsible antiskid device



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f coLLAPsIBLE: ANTISKID DEVICE- Fled Feb. 17, 1949 4 Sheets-Sheet 3 y, INVE NTOR,

Har/"y J. {en/)daer ATTORNEYS.

July l, 1952 H. J. Exsl-:NHA'UER 2,601,882

I COLLAPSIBLE lANTISKID DEVICE Filed Feb. 17, 1949 `4 sheets-sheet 4l A xNvENToR, Harry L/. 75m/,fader ATTORN EYS.

Patented July l, 1952 UNITED 'STATES PATENT OrFfFl-Ci-E oomsrsmsn-Anrrsmnfnnvron Harry f3. Eisenhauer, Ylhaloflll. Y. nctncamnremery 11, i919, seriarnmsgsss fz claim. (chiss-1225) 'My invention relates ingen'erai to anti-skid devices for Aapplication 'to automobile tires','fand in particular to amanti-skid 'device orftliisfnature which is made up 'otra number ofv separableparts.

'The principal object of my `invention "istolprovide Aan 'anti-skid device vwhichfrn'ay ybe easilyand quickly applied 'to `an automobile tire.

Another object is -to providenn `anti-#skid 'device which is constructed of fa number-'of separ-d able parts for convenient 'attachmentio fa t'tire and -for compact'storage of the device' when not in use.

A further object is to'provide ra novice-fot this nature which vmay Ibe 'quickly :assembled 'and mounted upon fa tire vwithout 'the :necessity of jacking up the wheelbearing*the"same.

Moreover, it-is-'an'objeot to'fprovideltreadzmernbers which are adapted VIto extend over'the periphery of the tireand'to besecuredftothefgripping members'of -rthe device.

Furthermore, my device is inexpensive to manufacture, and it is `so designed as v"to iiefdui-` able in operation, having 'itsfa'nti-skid featureof such nature that it remainseiiicientover 'aiiong period of use.

'The above objects yand Yaavantages.-liave Abeen accomplished bythe device .shown in r`the accompanying drawing, of which:

Figjl isa side elevation'of rnyianti-:skidedevice applied 'to' an automobiletire;

Fig. 2 is a face viewthereof'on'aredxxcedfscale;

Fig. `3 is 'an enlarged .fragmentary ysectional view taken-online III-Y-III'of Fig. y2;

Fig. 4 is a similar sectional view of a modified means'of iasteningthe grippingzniembers to the clamp members; i Y

.'Fig. 5 is a face viewoffa-modiedform ofdevce showing the use of tread members; 1

Fig. 6 is an enlarged fragmentary peripheral view of a tire showing the tread imembersof Fig. :in vposition thereon;

Fig.` 7 -is a fragmentarysectional'view taken on line VII--VII of Fig. 6;

Fig. 8 is 'a fragmentary end view of) one y"of the clamping members of the device shown-in Figs. 5 to '7 Fig. 9 is azgreatly fenlargeditragmentsry 'seotional end view of amodied:foi-.moi fastening means 'for the treadmembers, and `is taken on 1ine.IX-IX of Fig. 10; and,

Fig. 10 is la. fragmentary 'sectionalview Kot the form of fastening means of Fig. Scand lstakenfon line X-X thereof.

In'the drawings, V5 represents vthe tire 'ofrian' automobile, a portion thereof being fbrckenraway to show'lthe'wheelrrstructurefwith its hub cap l1.

.'My "device, as illustrated inFigs 1-4, comprises a clamp meinberlin 'and 'a plurality of gripping members il. Each'of'tlie gripping members comprlsesa radiail-yarranged'clamp arm I2 which extendsiacrossthezouterface of the "tire'and which is'attacliedftoithe clamp Vmember in a manner to beiiiereinafter described. r'Each gripping member 'isi-ifornred 'withf'azroad-engaging portion i3 V`at the outer'endofeachfof'its.clamp arms,- andalso with ia retain-ing farm f4 'which 'extends downwardly 'from fthe inner end of -each of 'the road-engaging portionsfforfcontact with the Ainner face of the tire. Each:road-enga'ging portion is preferably 'formed .lat each fo'f its "ends AVwith Van anti-skid prong 'l5 y'for'rromslipping engagement with icy pavement.

vThe lfoh'irtip 'member lill comprises an inner clamp-"platen and ian vouter clamp plate 2l held in adjustablespaoed relation by means ci toggle joints 22, each comprising two hingemembers 23.

' 'spaceiprovidedfbetween the engagedhinge members`23 of each toggle jointis a hook 26. This `hooliz-hasfan'nutenendfll vbent atan angle to the bodypart'l whichi's preferably less than 90 so as to securely 'engage theaperture 32 formed in the inner yend Ioli each of vthe gripping members H. lEach aperture yis'preierably inclined so that the portion 33 of thearm lying between the body 3l ifandllug-'ll will securely hold the hook against detachment from lthe zgripping member at all times 'exceptwhen "the device is to be removed from the Jtire. In Fig. 4 `I'fsh'ow a'modied form of v'attachi'n'ent 'ci the "gripping members to -the clamping members. .As her'efshown, each of the clamp arms 1211s formed 'Sat yits inner end vwith a hook 21 which is l'disposed within .a recess 28 formed in l'the-hinge member and which engages that portion of the hinge pin v24 which passes through the recess.

lExtending' axiallybetween the inner and 'outer elampfplates 20 and 2|, respectively.A is a clamp screw '35. 'This screwis formed yat its inner end with two spaced nxed'colla'rs Stand lmarranged oneI 'on'eachfsidefof the'inner plate! 0,-so"thattl1e screw is prevented from relative axial movement with the plate, and whereby this plate may be pushed away from and pulled toward the outer plate 2l by and with the movement of the screw 35. The screw is passed through an interiorally screw-threaded hub 4| formed preferably on the outer face of the clamp plate 2|, and a hand wheel 42 is secured to the outer end of the screw whereby it may be rotated. A lock member 43 is mounted upon the screw so that the position of the screw may be locked by forcing the member 43 against the hub 4l.

Referring now to Figs. 5 to 8` inclusive, I show extensible across the width of the tire periphery.-

Each of these members is provided at each end withv loops 52 through which a retaining rod 53 is passed. The gripping members 50 are each formed with a tire-engaging portion 54.which extends inwardly from the clamp arm 55 and preferably at right angles thereto. The metal at the junction of each clamp arm and tire-engaging portion is increased in width and these portions are united by means of a return bend portion 56 which extends above the tire-engaging portion 54 and through which the retaining rods pass. Each rod is formed with a head 60 at each end which is disposed on the outside surface of the portions 56 of gripping members to thereby prevent endwise movement of the 'rods and to maintain the tread members in place upon the tire. Each of the gripping. members is provided in it supper end with oppositely arranged V-shaped slots 6l extending first inwardly and upwardly and then outwardly and upwardly terminating in the return bend portion 56. The lower end of each of these slots is open at its inner end for the reception of one of the rods 53 when assembling the tread members to the gripping members. Owing to the formation and position of the slots, the rods and the attached tread members will be kept in position by ltension placed upon the tread members. s

In Figs. 9 and l0 I show a modified formof means of attaching the tread member to the gripping members 5l. In this formA a radial slot 59 is formed in each of the return bend portions 56 of the gripping members 5l which slot is in communication with two lateral slots 62 each of which extends from the slot 59 in opposite directions. When assembling, each of the rods is separately passed through the radial slot 59 and then engaged with one of the lateral slots 62. After the rods are disposed within their respective lateral slots, a lock plate 63 having a slightly tapered portion 64 is forced upwardly between the opposite rods, thereby forcing them and firmly holding them within their respective slot. The lock plate isformed with a slot 65 for the reception of a lock screw 66 which is attached to the arm of the gripping member 51. While I have shown, in Fig. 5, the use of four tread members, it is obvious that a lesser number may be used if desired. When less than' four members are used, it is preferable to arrange one on each of two opposite sides of the tire. However, in an emergency, only one tread member can be used.

When my device is to be assembled upon a tire, two or three `of the gripping members l I are engaged with the upper portion of the tire and moved from the dotted line position shown in Fig. l to the full line position. The clamp member l0 which has been previously collapsed by drawing the plates 20 and 2| toward each other, has the lugs 30 of the hooks 26 engaged with the apertures 32 formed in clamp arms of the gripping members. The clamp member will thereby be temporarily supported, and while being so supported, the last one or two gripping members may be engaged with their respective hooks in the. position shown by the dot and dash lines shown in Fig. 1,' after which these last mentioned gripping members may be moved to the lower dotted line positions. After such initial assembling of the parts to the tire, the clamp screw35 will be rotated so as to force the clamp plates 20 and v2| apart and to move them with the coactinghinge members from the dotted line positions in Fig. 1 to the full line positions there shownl Obviously, by such movement the hooks will be drawn inwardly toward the axis of the wheel, thereby moving the gripping members from the dotted line positions of Fig. l to the full line positions thereof where the road-engaging portions I3 of the gripping members will be drawn into firm contact with the periphery of the wheel. Obviously, to remove the device vfrom the tire, it is only necessary to reverse the screw and draw the plates toward each other thereby forcing the hooks outwardly to release ythe gripping `members and permit them to be removed from the tire. -When the tread members 45 are to be used, the device shown in Figs. 5 to 8 is I assembled in a manner similar to that just above described and then the tread,` members are assembled at the most convenient time and either before or after the clamp member has tightened the gripping members upon the tire.

Obviously, some modifications of the details herein shown and described may be made without departing from the spirit of my invention or the scope of the appended claims; and I do not therefore wish to be limited to the exact embodiment herein shown and described.

What is claimed is:

l. An anti-skid device comprising a unit clamp member, said clamp member comprising two oppositely spaced plates, toggle joints for hingedly uniting saidplates as a unit independently of said gripping members, a plurality of separate gripping members for engagement with the periphery of the tire, and hook means carried by said clamp member for detachably connecting said gripping members to said clamp member. i v

2. An anti-skid device comprising a plurality o f separate gripping members 'for engagement with the periphery of a tire, each member havinga clamp arm formed with a hook-engaging aperture at its inner end, and a road-engaging portion carried by said clamp arm and provided with means for engaging the tire, a separate clampmember for connection to said gripping members, said clamp member comprising two oppositely spaced plates. toggle joints for hinged- 1y uniting said plates, a clamp screw for moving said plates toward and from each other, and hook meanscarried by said clamp member for engaging the apertures of `said clamp arms.

3. anti-skid device comprising a plurality of separate gripping members for engagement with Athe periphery of a' tire, each member having a clamp arm formed with a hook-engaging aperture at its innerend, a road-engaging portioncarriedby said clamp arm, and a retaining arm extendinginwardly from the inner' end of said road-engaging portion for engagement with the back side of the tire, a separate clamp member for attachment to said gripping members, said clamp member comprising two oppositely spaced plates, a plurality of hinges connecting said plates at spaced intervals, a hook pivotally attached to the hinge pin of each hinge, said hook being formed with a hook lug for engagement with the aperture of each coacting clamp arm, and a clamp screw for moving said plates toward and from each other.

4. An anti-skidV device comprising a unit clamp member, a plurality of separate gripping members for engagement with the periphery of an automobile tire, hook means carried by said clamp member for detachably connecting said gripping members to said clamp member, a plurality of tread members disposed upon the periphery of the tire, each of said tread members extending between two adjacent gripping members, and means carried by said gripping members and said tread members for detachably connecting said tread members to said gripping members.

5. An anti-skid device comprising a plurality of separate gripping members for engagement with the periphery of an automobile tire, each member having a clamping arm, and a road engaging portion carried by said clamp arm and engageable with the periphery of the tire, each of said clamp arms being formed with an upstanding portion rising above said tire engaging portion, a separate unit clamp member for drawing said gripping members into non-slip-` of separate gripping members for engagement with the periphery of an automobile tire, each member having a clamping arm, and a road engaging portion carried by said clamp arm and engageable with the periphery of the tire, each of said clamp arms being formed with an upstanding portion rising above said tire engaging portion, a separate unit clamp member for drawing said gripping members into non-slipping engagement with the periphery of the tire, detachable means for connecting said gripping members to said clamp member, a plurality of tread members formed of interlaced wire for attachment to said gripping members, and a retaining rod connected to the ends of said wires at each end of each of said tread members, the upstanding portion of each gripping member being formed with slots for the locking reception of said retaining rods.

7. An anti-skid device comprising a separate clamp member, a plurality of separate gripping members for engagement with the periphery of a tire, said clamp member comprising two oppositely spaced plates, toggle joints for hingedly uniting said plates, means for moving said plates toward and away from each other, and means carried by said plates and said gripping members for detachably connecting said gripping members to said clamp member.

HARRY J. EISENHAUER.

REFERENCES CITED The following references are of record in the iile of this patent: l

UNITED STATES PATENTS Number. Name Date 1,650,437 Forwood Nov. 22, 1927 1,882,376 Weber Oct. 11, 1932 2,429,738 Zimmer Oct. 28, 1947 2,456,544 Varner Dec. 14, 1948 2,477,051 Eisenhauer July 26, 1949 2,559,425 Haracz July 3, 1951 

